Q2.3 SE


New Adapters
Ergonomic Levers
5mm Brake Line
Performance Mineral Oil
New Brake Pads

Select kit options below

ThumbnailSKUStock Item PriceQuantity
Q2.3 SE - Rear (Right) DIDH2221 Out of Stock Rear (Right) $199.99
Q2.3 SE - Front (Left) DIDH2222 Out of Stock Front (Left) $199.99
Q2.3 SE - RS01E 180 mm PARO2004 RS01E 180 mm $49.99
Q2.3 SE - RS01E 203 mm PARO2006 RS01E 203 mm $52.99
Q2.3 SE - RS01E 220 mm PARO2008 RS01E 220 mm $59.99
Q2.3 SE - RS01E 223mm PARO2010 RS01E 223mm $59.99
Q2.3 SE - RC01E 160 mm PARO2104 RC01E 160 mm $64.99
Q2.3 SE - RC01E 180 mm PARO2106 RC01E 180 mm $69.99
Q2.3 SE - RC01E 203 mm PARO2108 RC01E 203 mm $74.99
Q2.3 SE - TR42 180mm PARO1980 TR42 180mm $69.99
Q2.3 SE - TR42 203mm PARO1981 Out of Stock TR42 203mm $74.99
Q2.3 SE - P17 PM/PM PAAD1011 P17 PM/PM $17.99
Q2.3 SE - P20 PM/PM PAAD1012 P20 PM/PM $17.99
Q2.3 SE - P23 PM/PM PAAD1013 P23 PM/PM $17.99
Q2.3 SE - P40 PM/PM PAAD1014 P40 PM/PM $17.99
Q2.3 SE - P43 PM/PM PAAD1015 P43 PM/PM $17.99
SKU: Q2.3 SE Tabled Kit Categories: , , , , , , Tags: , , ,


Working with the world’s best downhill riders has allowed us to develop top-level braking performance. When designing the Q2.3 SE, we wanted to create a brake system for the specific needs of modern mountain bikes. With the added speed and potentially weight from an electric motor and battery, these bikes will typically generate more heat than a typical mountain bike. Our Q2.3 SE system combines the latest technology in braking with existing technology developed on the World Cup Downhill race circuit. The result is not a rebranded downhill brake, rather a system that will meet the unique needs of today’s electric mountain bikes.

Overall rotor thickness was increased from 1.8mm to 2.3mm which decreases the operating heat of the brake system by 8% and reduces rotor warping (lateral deformation) by 47%. This means with our new 2.3mm thick rotors rider won’t be glazing pads or overheat under the added stress of an electric mountain bike as they would with other brake systems.

When designing the 2.3mm specific caliper, material was added to key areas increasing overall stiffness and heat management. This new caliper also received an open top design allowing pads to be inspected or changed without requiring riders to lift a heavy E-MTB or remove the wheel.



  • Ergonomic lever blade
  • 10mm internal brake lever piston
  • Adjustable lever reach
  • I-Spec II compatible
  • I-Spec EV adapter option
  • TRP and MMX shifter adapter available
  • Hinged lever clamp
  • Matte black finish


  • Optimized hydraulic flow
  • Stainless steel pistons
  • 5.5 mm brake hose
  • Made for 2.3mm thick rotors
  • Top loading pad design
  • New resin brake pad
  • Banjo hose connection
  • Newly formulated mineral oil
  • Matte black finish

Weight: 307g (Front without rotor and adapter)


2.3mm Brake Disc

  • 8% improved heat resistance
  • 47% improved lateral stiffness
  • 223mm & 220mm rotors – more braking power for larger 29″ wheels
Rotor New CNC Disc Adapter

  • CNC milled
  • Increased stiffness and a clean fit
  • Simple product marking
Ergonomic Brake Levers

  • Aluminum alloy
  • Ergonomic 1-finger positioning
  • Textured surface for increased drip
Performance Mineral Oil

  • Lower viscosity for higher flow
  • Increased heat resistance up to 230°C
  • Improved heat dissipation
New Brake Pads

  • New organic compound (blue)
  • Improved heat resistance
  • Reduced bedding-in time
  • Lower noise
E-Brake Rated

  • Greater stability
  • Improved oil flow rate
  • Improved rear brake response
  • Faster venting
9mm Brake Lever Piston

  • New hydraulic ratio for more power
  • Optimized for 1-finger braking
  • Reduced arm pump and fatigue

For full details, please visit our Technologies page.